Updated January 20, 2022
The coil gauge is the measurement of the thickness of the wire used to make a mattress coil." Gauge" is a technical term used to measure the thickness or diameter of something.
Coil gauge is one of those terms that you will see or hear as you shop for a new mattress. The coil gauge of a mattress measures the thickness of the coils inside. A lower gauge number means a thicker coil, which results in a firmer spring. Higher gauge numbers mean a thinner coil, which results in a gentler spring. Mattress coil gauges most often range from 12 to 15.
If you enjoy a mattress with more give, then a coil gauge above 14 is best. If you like a very firm level of comfort, then you’ll generally want a mattress with a gauge of 13 or lower.
Coil gauge can also be a signal of the durability of the mattress. Typically, coils with a lower gauge will be more durable than those with a higher coil gauge because the thicker wire won't wear out as fast. However, a coil gauge isn't the main factor when determining the durability of a mattress. The comfort materials are likely to wear out before the coil system does.
Shopping for a mattress can be confusing. With all the technologies and terminology you run into while doing research, it can be difficult to know what's actually important. There are many factors, such as the number of coils, type of coil system, whether the coils are tempered, and the comfort materials used.
While coil gauge can give you some information about how a mattress feels, it shouldn't be your only focus as you try to find the ideal mattress. The comfort a mattress provides comes from a combination of the coil system and comfort materials. A mattress with a pillow top or euro top could feel a lot softer than some other mattresses with the same coil gauge. Look at coil gauge as one factor towards the overall comfort of a mattress.
At US-Mattress, you can find mattresses with the most common coil gauges at every comfort level. If you have any questions, you can give us a call at 1-800-455-1052. A friendly mattress expert will be happy to provide you with all the information you need to make a confident and well-informed decision.